Improvement in locomotive earth-excavators



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A HAWLEY LOCOMOTI'VE EARTH-EXCAVA'IOR.

Patented Dec. 28, 1875.

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A. HAWLEY.. LOCOMOTIVE EARTH-EXCAVATOR. No.171,564. PatentedDec;28-,"18-7-5-.'

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UNITED STATES PATENT OFFICE.

ABEL HAWLEY, OF GALVESTON, TEXAS.

IMPROVEMENT IN LOCOMOTIVE EARTH-EXCAVATORS.

Specification forming part of Letters Patentllo- 171,564. dated December28, 1875 application filed December 8, 1875.

To all whom it may concern Beit known that I, ABEL HAWLEY, of Galveston,in the county of Galveston and State of Texas, have invented certain newand useful Improvements in Locomotive Earth-Excavators, of which thefollowing is a specification: r

The object of this invention is to provide anearth-excavator,principally for use in making the road-beds ofrailroads, which shall not only do its work co'ntinuously, but whichshall be equally efficient in throwing up an embankment or in making adeep out.

To this end, therefore, this invention consists of a locomotivetraction-engine, carrying a rotary boring-wheel provided with radialcutters and peripheral buckets, said wheel being operated by the engineas the machine advances up to its Work, the details of all of which willbe hereinafter fully described.

In the drawing, forming part of this specification, Figure l is aperspective view of the whole machine. connection of the driving-shaftwith one driving-wheel. Fig. 3 is a plan of the bottom of the machine.Figs. 4 and 5 show the means of adjusting the height of theboring-wheel, and the position, horizontally, of its drivingpmion.

In all the figures like letters indicate the same parts.

A is the main frame or body of the machine, upon which is carried, inany conven-. ient position, a boiler and any suitable engine or engines.B B are the driving-wheels, and O O the truck or steering Wheels. D isthe boring -wheel. provided with radial cutters d d and peripheralbuckets d 0?. This boring-wheel is of the same general construction asthat shown in my rotary dredgingmachine, and is vertically adjustable,to suit the depths of its cuts, by means substantially the same asemployed in said machine. E is a shaft of the machine, which is actuatedby the engine or engines, either by the intervention of ordinaryconnecting-rods and cranks, by gearing, or by means of pulleys andbelts. On the shaft E are two pinions, E E which mesh into the internalgearingf f of the driving-wheels B. The pinion F for driving theboring-wheel D, is laterally adjustable by Fig. 2 shows the adjustable.

means of sliding bearings g g, in which its shaft F is journaled. Theplows P P are secured to the frame of the machine by any suitable means.Said plows are placed in front of the driving-wheels B B, and, by.virtue of such position, out a clear path for the tread of said wheels.The axles b b of all the wheels, and the frame carrying the plows P P,may be independently lengthened, so that when it is desired to cut downby the wheels D into the earth, below the tread of the wheels B B G O,the said wheels will be supported by the earth on each side of the cutmade by said wheel D. His alever, connected to the steering-gear of themachine, which gear may be of any approved form. In the drawing saidgear consists of a toothed sector, worm-shaft, and pinion, operated bythe lever H. L l are levers for throwing in and out of gear the pinionsE E Having thus fully described this locomotive earth-excavator, as ofmy invention I claim- 1. A locomotive earth-excavator consisting of atraction-engine of any approved form, having mounted thereon, inadjustable bearings, a rotary boring-wheel carrying radial cutters andperipheral buckets, all arranged and operating substantially in themanner hereinbefore described, for the purposes set forth.

2. The adjustable shaft E and. its pinions E E in combination with thedriving-wheels B B, whereby either one of said wheels may be rotatedalone, or both at thesame-time, at the will of an operator,substantially in the manner hereinbefore described, for the purposes setforth.

' 3. The adjustable driving-shaft F and its pinion F in combination withthe boringwheel D, whereby said pinion is thrown in and out of gear withthe boring-wheel, and adjusted. to mesh into the gearing on said wheelat the varying elevations of the wheel,

all substantially in the manner hereinbefore described, for the purposesset forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

' ABEL HAWLEY.

Witnesses:

JAS. F. DUHAMEL, THoMAs BYRNE.

